WO2010049689A3 - Control of a shape memory alloy actuation arrangement - Google Patents
Control of a shape memory alloy actuation arrangement Download PDFInfo
- Publication number
- WO2010049689A3 WO2010049689A3 PCT/GB2009/002570 GB2009002570W WO2010049689A3 WO 2010049689 A3 WO2010049689 A3 WO 2010049689A3 GB 2009002570 W GB2009002570 W GB 2009002570W WO 2010049689 A3 WO2010049689 A3 WO 2010049689A3
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- resistance
- sma actuator
- sma
- basis
- drive
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03G—SPRING, WEIGHT, INERTIA OR LIKE MOTORS; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR
- F03G7/00—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for
- F03G7/06—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for using expansion or contraction of bodies due to heating, cooling, moistening, drying or the like
- F03G7/065—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for using expansion or contraction of bodies due to heating, cooling, moistening, drying or the like using a shape memory element
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B3/00—Focusing arrangements of general interest for cameras, projectors or printers
- G03B3/10—Power-operated focusing
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/57—Mechanical or electrical details of cameras or camera modules specially adapted for being embedded in other devices
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/50—Constructional details
- H04N23/55—Optical parts specially adapted for electronic image sensors; Mounting thereof
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Lens Barrels (AREA)
- Adjustment Of Camera Lenses (AREA)
- Control Of Position Or Direction (AREA)
Abstract
An SMA actuation apparatus comprises: an SMA actuator arranged to drive movement of a movable element; a current supply supplying a drive current; a detection circuit detecting a measure of the resistance of the SMA actuator; and a control unit operative to generate a closed-loop control signal supplied to current supply for controlling the power of the drive current to drive the resistance of the SMA actuator to a target value. The control unit derives: an estimate of a characteristic temperature of the SMA actuation apparatus on the basis of the supplied power, using a thermal model; and a resistance offset on the basis thereof. The closed-loop control signal is generated on the basis of the error between the measure of the resistance of the SMA actuator and the target value of the resistance of the SMA actuator, adjusted by the resistance offset to compensate for variations in resistance.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2011533812A JP5548211B2 (en) | 2008-10-29 | 2009-10-29 | Control of shape memory alloy actuator device |
US13/126,401 US8448435B2 (en) | 2008-10-29 | 2009-10-29 | Control of a shape memory alloy actuation arrangement |
EP09752887A EP2342459B1 (en) | 2008-10-29 | 2009-10-29 | Control of a shape memory alloy actuation arrangement |
Applications Claiming Priority (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB0819774A GB0819774D0 (en) | 2008-10-29 | 2008-10-29 | SMA control algorithm improvememts |
GB0819774.1 | 2008-10-29 | ||
GBGB0821209.4A GB0821209D0 (en) | 2008-11-20 | 2008-11-20 | SMA control |
GB0821209.4 | 2008-11-20 | ||
GBGB0822233.3A GB0822233D0 (en) | 2008-12-05 | 2008-12-05 | SMA control |
GB0822233.3 | 2008-12-05 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2010049689A2 WO2010049689A2 (en) | 2010-05-06 |
WO2010049689A3 true WO2010049689A3 (en) | 2011-02-24 |
Family
ID=42129367
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/GB2009/002570 WO2010049689A2 (en) | 2008-10-29 | 2009-10-29 | Control of a shape memory alloy actuation arrangement |
Country Status (4)
Country | Link |
---|---|
US (1) | US8448435B2 (en) |
EP (1) | EP2342459B1 (en) |
JP (1) | JP5548211B2 (en) |
WO (1) | WO2010049689A2 (en) |
Families Citing this family (19)
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US8810234B2 (en) * | 2008-05-08 | 2014-08-19 | GM Global Technology Operations LLC | Method of controlling active material actuation utilizing an operational envelope |
WO2010029316A2 (en) | 2008-09-12 | 2010-03-18 | Cambridge Mechatronics Limited | Optical image stabilisation |
JP5771375B2 (en) * | 2010-08-31 | 2015-08-26 | オリンパス株式会社 | Method and apparatus for controlling shape memory alloy wire actuator |
US8866918B2 (en) | 2010-09-22 | 2014-10-21 | Cambridge Mechatronics Limited | Optical image stabilisation |
US20120197442A1 (en) * | 2011-01-26 | 2012-08-02 | University Of Florida Research Foundation Inc. | Method and apparatus for improving shock resistance of mems structures |
CN103814200B (en) * | 2011-09-20 | 2016-08-17 | 丰田自动车株式会社 | The control device of internal combustion engine |
US9753300B2 (en) * | 2012-02-16 | 2017-09-05 | Cambridge Mechatronics Limited | Shape memory alloy actuation apparatus |
EP2732331B1 (en) * | 2012-05-25 | 2015-06-24 | Cambridge Mechatronics Limited | Shape memory alloy actuation apparatus |
DE102012020310B4 (en) * | 2012-10-16 | 2014-05-22 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Method for position control of an actuator, actuator and computer program storage medium |
GB201220485D0 (en) | 2012-11-14 | 2012-12-26 | Cambridge Mechatronics Ltd | Control of an SMA actuation apparatus |
US9829304B2 (en) * | 2013-05-21 | 2017-11-28 | GM Global Technology Operations LLC | Sensorless position control of active-material actuators |
CN104902162B (en) * | 2014-03-03 | 2019-03-29 | 联想(北京)有限公司 | A kind of information processing method and electronic equipment |
CN104902160B (en) * | 2014-03-03 | 2018-10-12 | 联想(北京)有限公司 | A kind of information processing method and electronic equipment |
GB201521632D0 (en) | 2015-12-08 | 2016-01-20 | Cambridge Mechatronics Ltd | Tilt compensation in an SMA actuator |
CN105548238A (en) * | 2015-12-25 | 2016-05-04 | 江阴法尔胜佩尔新材料科技有限公司 | Non-contact completely-free-recovery part austenite recovery ending temperature measurement system |
GB201610039D0 (en) | 2016-06-08 | 2016-07-20 | Cambridge Mechatronics Ltd | Dynamic centring of SMA actuator |
JP6665723B2 (en) * | 2016-07-27 | 2020-03-13 | 株式会社デンソー | Actuator, sensor device, and control device |
GB201815218D0 (en) * | 2018-09-18 | 2018-10-31 | Cambridge Mechatronics Ltd | Methods for controlling sma actuators |
JP7190922B2 (en) * | 2019-01-30 | 2022-12-16 | 旭化成エレクトロニクス株式会社 | Control device and control method |
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WO2003012384A2 (en) * | 2001-07-27 | 2003-02-13 | Mide Technology Corporation | Method and device for measuring strain using shape memory alloy materials |
WO2005026539A2 (en) * | 2003-09-05 | 2005-03-24 | Alfmeier Präzision | Apparatus and method for low cost control of shape memory alloy actuators |
EP1914422A1 (en) * | 2005-08-11 | 2008-04-23 | Konica Minolta Opto, Inc. | Drive device, lens barrel, imaging device, lens drive method, and method of producing shape memory alloy |
WO2008129291A2 (en) * | 2007-04-23 | 2008-10-30 | Cambridge Mechatronics Limited | Shape memory alloy actuation apparatus |
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US5763979A (en) | 1996-02-29 | 1998-06-09 | The United States Of America As Represented By The Secretary Of The Navy | Actuation system for the control of multiple shape memory alloy elements |
JPH11324896A (en) | 1998-03-13 | 1999-11-26 | Minolta Co Ltd | Driving mechanism using shape memory alloy |
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JP2001142105A (en) | 1999-11-16 | 2001-05-25 | Minolta Co Ltd | Actuator using shape memory alloy |
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-
2009
- 2009-10-29 EP EP09752887A patent/EP2342459B1/en active Active
- 2009-10-29 US US13/126,401 patent/US8448435B2/en active Active
- 2009-10-29 WO PCT/GB2009/002570 patent/WO2010049689A2/en active Application Filing
- 2009-10-29 JP JP2011533812A patent/JP5548211B2/en active Active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2003012384A2 (en) * | 2001-07-27 | 2003-02-13 | Mide Technology Corporation | Method and device for measuring strain using shape memory alloy materials |
WO2005026539A2 (en) * | 2003-09-05 | 2005-03-24 | Alfmeier Präzision | Apparatus and method for low cost control of shape memory alloy actuators |
EP1914422A1 (en) * | 2005-08-11 | 2008-04-23 | Konica Minolta Opto, Inc. | Drive device, lens barrel, imaging device, lens drive method, and method of producing shape memory alloy |
WO2008129291A2 (en) * | 2007-04-23 | 2008-10-30 | Cambridge Mechatronics Limited | Shape memory alloy actuation apparatus |
Also Published As
Publication number | Publication date |
---|---|
JP5548211B2 (en) | 2014-07-16 |
EP2342459A2 (en) | 2011-07-13 |
JP2012506971A (en) | 2012-03-22 |
US8448435B2 (en) | 2013-05-28 |
EP2342459B1 (en) | 2012-09-19 |
WO2010049689A2 (en) | 2010-05-06 |
US20110277462A1 (en) | 2011-11-17 |
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